Buckle-proof clamshell carton
AssigneePerseco Division of The HAVI Group LP
InventorJohn F. Sorenson
Life of this patent
Estimating the term…
Abstract
A clamshell type carton is provided with a cut along the hinge score line connecting the upper cover and lower tray portions. A second cut is placed in the back panel of the carton, above or below the hinge score line cut, wherein the second cut is a continuous curve having a first end point located in the back panel and a second end point intersecting the cut along the hinge score line. The second cut is utilized to facilitate the easy opening and closing of the carton without buckling occurring in the back panel in the region of the hinge score line.
Claims54
In a clamshell type container having a top cover portion, a bottom tray portion and an integral back panel, wherein said cover portion and said tray portion are hingedly connected through a hinge line extending across said back panel, the improvement comprising:
- a first cut along said hinge line;
- a second cut in said back panel positioned to one side of said first cut, wherein said second cut is a continuous curve having a first end point located in said back panel and a second end point intersecting said first cut.
In a clamshell type container having a top cover portion, a bottom tray portion and an integral back panel, wherein said cover portion and said tray portion are hingedly connected through a hinge line extending across said back panel, the improvement comprising:
- a first cut along said hinge line;
- a second cut in said back panel positioned at one side of said first cut, wherein said second cut is J-shaped having curved section and a straight section.
In a clamshell type container having a top cover portion, a bottom tray portion and an integral back panel, wherein said cover portion and said tray portion are hingedly connected through a hinge line extending across said back panel, the improvement comprising:
- a first cut along said hinge line;
- a second cut in said back panel positioned at one side of said first cut, wherein said second cut is a continuous curve having a first end point located in said back panel and a second end point intersecting said first cut;
- and
- a third cut in said back panel below said first cut and offset with respect to said second cut.
Dependencies are inferred from the claim text.